Pith Number

pith:F2BSO4MS

pith:2017:F2BSO4MSBR5J3NT56IKNIMPQAB

not attested not anchored not stored refs pending

Alexandrov's theorem revisited

F. Maggi, M. G. Delgadino

arxiv:1711.07690 v2 · 2017-11-21 · math.AP · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2BSO4MSBR5J3NT56IKNIMPQAB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:51:34.307082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e832771920c7a9db67df214d431f0004b08ef4b8e700d5e14948ed735b9488a

Aliases

arxiv: 1711.07690 · arxiv_version: 1711.07690v2 · doi: 10.48550/arxiv.1711.07690 · pith_short_12: F2BSO4MSBR5J · pith_short_16: F2BSO4MSBR5J3NT5 · pith_short_8: F2BSO4MS

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/F2BSO4MSBR5J3NT56IKNIMPQAB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 2e832771920c7a9db67df214d431f0004b08ef4b8e700d5e14948ed735b9488a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82b4e933f4c2044a29ab4bd920ab50e4aace15a15207aaa1ba9984172ad03453",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-11-21T09:46:08Z",
    "title_canon_sha256": "9e3a633ddfa4acac53f58294bdf7c27c7d9b9bd1fa0882f3d79d7d71fda04503"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07690",
    "kind": "arxiv",
    "version": 2
  }
}